rarefaction of air 空气稀薄化
bone rarefaction 骨质疏松
Rarefaction Of Bone 骨质疏松
rarefaction quadrant 稀疏像限
rarefaction state [物] 稀疏状态
rarefaction control 水击超前控制
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"a sound wave causes periodic rarefactions in its medium"
以上来源于: WordNet
N the act or process of making less dense or the state of being less dense 疏松
This is called a rarefaction and is represented by widely spaced dots.
这个区域称为稀疏区，并用疏散的小点表示。
Objective: For observation and treatment of diabetes followed by rarefaction of bone.
目的：观察和治疗糖尿病伴随骨质疏松。
Objectives: To study the changes in microvascular rarefaction of retinae in hypertensive rats and patients.
目的：了解自发性高血压大鼠和高血压患者视网膜微血管变化。
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